Sensing mechanism



June 1, 1943- G. TAuscHEK SENSING MECHANISM Original Filed June 24, 1936 2 Sheets-Sheet l mo- Q.

INVENTOR ATTORNEY June 1, 1943 G. TAuscHEK SENSING MECHANISM Original Filed June 24, 1936 2 Sheets-Sheet 2 j lNvr-:NTOR

ATTORNEY Patented June 1, 1943 SENSING MECHANISM Gustav Tauschek, Vienna, Germany, assigner t International Business Machines Corporation, New York, N. Y., a corporation of New 'York Original application June 24, 1936, Serial No.

Divided and this application Novemf ber 13, 1940, Serial No. 365,531

3 Claims.

This invention relates to card controlled calcuating machines and particularly to the typein which tabulating cards are analyzed at rest and while in analyzing position the cards are adapted to control calculating operations of different types.

This application is a division of the application in the name of G. Tauschek, Serial No. 86,920, led June 24, 1936, now Patent No. 2,224,774, dated December 10, 1940. In the present application, the disclosure and claims are restricted solely to improvements in the analyzing mechanisms.

With regard to the improvements in analyzing devices for analyzing a card at rest, it is explained that in the present state of the art such analyzing devices usually include a 'reciprocable frame which carries a plurality of analyzing elements. The cards are provided with a plurality of columns and obviously in order that any column may control an entry operation, the frame must be provided with a number of sets of analyzing elements which are commensurate with the number of card columns. This construction of the machine has resulted in a unit which is quite heavy, requires considerable amount of power to operate, and also resulted in further complications in the machine.

With this disadvantage in view, it is the main object of the present invention to provide an analyzing mechanism which consists of a plurality of separate analyzing units, each unit consisting of a plurality of analyzing elements. To attain the desirable end that only such elements be utilized which are consistent in number with the controlling columns, it is a further specic object of the inventionto provide a simple and effective means whereby the analyzing units may be readily attached to, and conversely, detached` from the frame which supports the analyzing units.

With the last` mentioned specific object in mind,

a still further object of the present invention is to provide such attaching means which is in the nature of electrical connections to digit impulse transmitting bars to which timed digit representing impulses are transmitted so as to effect the entry operation.

' In more detail, each analyzing unit is provided with a plurality of analyzing brushes which are so spaced that they are correlated with the indexl point positions of a related card column. From these analyzing brushes there are extended conducting pins which are adapted to be received by holes in the digit representing bars. In this GTi (Cl. 23S-61.11)

manner, permanent and eilicient electrical connections are made between the analyzing elements and the digit representing bars, and when the units are in their attached position they are adapted to receive like movements imparted to the supporting frame.

In the appended drawings of the following specification, the novel analyzing devices of the present invention are to be used in connection with calculating mechanisms of different types which are shown in the aforementioned Patent No. 2,224,774, to which recourse may be had for a disclosure of such calculating mechanisms. It is to be understood, however, that the present disclosure should be considered as illustrative and not restrictive since features of the present invention may be applied to other forms of card controlled machines without departing from the spirit of the invention.

Other objects of the invention will be pointed out in the following description and claims and illustrated in the accompanying drawings which disclose by Way of example, the principle of the invention and the best mode, which has been contemplated of applying that principle.

In the drawings:

Fig. 1 is a transverse sectional view which shows the construction of one of the detachable brush units and the manner in which it is attached to the digit representing bars for electrical connection therewith and simultaneously causing its position over the index points of the card to be analyzed. lIhis view shows the analyzing frame in operated position and the associated operating mechanism.

Fig. 2 is a fragmentary plan view of the mechal nism shown in Fig. 1 and shows the construction of the analyzing frame and the locking means for holding the analyzing units in assembled position.

Card feeding mechanism The card feeding mechanism for feeding the cards from the card supply hopper to the analyzing mechanism and then from the analyzing mechanism is fully shown and described in the patent to Tauschek, No. 2,224,774, part of it being identified herein which consists of a tape which is driven by a sprocket wheel 66. The sprocket wheel 66 has radial projections 64 engaging holes in the tape 65 and the latter also carries a card picker l2. During each cyclic operation ofthe card feeding mechanism, the picker 'l2 engages the card and feeds it from the hopper to a position beneath the analyzing mechanism.

When a tabulating card is fed out of the hopper the leading edge of the card passes to the left and the card in its travel to the left is guided by guiding means fully shown and described in the aforementioned patent, some of which are shown herein.

Card guiding means Referring to Fig. '1, it will be noted that there is provided a longitudinal bar 84 of insulating material supported by the frame of the machine. Attached to the bar 84 is a longitudinal metal plate 85 provided with a recess 86 in which the card feeding tape 65 travels. Rigidly secured to the plate 85 is a longitudinal plate 81 which is cut underneath longitudinally so that with respect to the upper surface of the feeding tape 65 there is formed a slot adapted to receive the tabulating card |00. The card is adapted to travel in a plane beneath the brushes 11 by passing over a series of spaced tracks 88. A bar 89 of insulating material is provided with a tongue 90 providing a space above tracks 88 to further guide the edge of the card in transverse movement and keep it in alignment with brushes 11.

A series of tracks 88 are provided, one for each card column and they are preferably mounted by the following construction. Attached to a stationary plate 9| is a bar 92 of insul'ating material provided with longitudinal slots 93 adapted to receive the tracks 88 which are constructed of some desirable metal of high electrical conductivity. The bar 89 is provided with slots similar to slots 93 of the bar 92 and are aligned therewith so that when the bars 90 and 9 2 are supported and spaced apart in the manner shown in Fig. 1, slots are provided for holding the tracks 88 in proper positionand insulated from each other.

The rear portions of the metallic tracks 88 are received by a series of slots 94 formed in the bar 84 so as to rigidly hold the metallic tracks 88 at their rear ends andlspaced apart from each other.

One track 88 is provided for each controlling card column, there being guiding means for eighty tracks for a corresponding number of card columns of the tabulating card.

Analyzing means Associated with each track 88 is a brush unit comprising a series of ten flexible Wire brushes 11 which are adapted, when the card is in the analyzing position, to be pressed against the card whereby the brush 11 positioned over the perforation in the column will pass through the perforation and make an electrical contact with the related track 88.

A suitable framework is provided to carry al1 the brush units |35 which are manually placed in operative position and to further cause the brushes to partake of a reciprocating movement. This framework comprises a transverse plate 95 provided with ears 96 adapted to t in slots 91 of guide bars 98, attached to a cross bar 99 comprising part of the machine framework. Fig. 2 shows the structure for guiding the plate 95 in its reciprocating movement at its right end and precisely the same construction is used for guiding the frame at its left end. The plate 95 is provided with integral side arms |0|. It is obvious from the preceding description that the transverse plate 95 and side arms 0| comprise a yokeshaped framework which is slidably mounted.

In order to effect a downward movement of the framework the following mechanism is preferably mounted. The transverse plate carries at each end, as shown in the drawings for one end, a. bracket |03 provided with a pin |04 adapted to receive the open slot of an arm |05 secured to a rock shaft |06. Attached to the rock shaft |86 is an arm |01 provided with a roller |08 adapted to cooperate with a profile cam |09 secured to a.

drive shaft ||0. In the normal condition of the machine the brush carrying framework is in its upward position with the brushes 11 above the metal tracks 88 at which time the roller |08 rests on the circular part of the cam |09. During the initial rotation of the cam in a clockwise direction and afterthe card has been fed beneath the analyzing brushes 11 the cam portion will rock the arm |01 against the action of a spring ||2, thereby depressing the brush carrying framework downwardly and when it is ina depressed position as shown in Fig. l it will be held by means of a spring-pressed latch pawl |13 latching over an arm ||4 secured to the shaft |06.

Normally the roller |08 rests against the low part of cam |09 and during each cyclicoperation of the machine as more fully disclosed in the aforementioned patent a shaft ||6 is rotated to rotate a pinion ||1 which meshes with a gear ||8 secured to the shaft ||0.

The cam |09 is repeatedly rotated during the calculating operation in the clockwise direction but when the cam depresses the analyzing frame the first time the latch pawl ||3 will hold the frame in depressed position with the analyzing brushes 11 pressed against the card so as to enable the brushes to control the calculating operation,

As more fully described in the aforementioned patent, at the end of the calculating operation an impulse is directed to a brush release magnet 349. The latter through its movable core 350 and link 35| rocks the latching pawl ||3, thereby disengaging it from the arm I |4 which is secured to the shaft |06. Under-'the action of the spring I2 the brush supporting frame can now be elevated so that the analyzing brushes 11 are now out of contact with the tracks' 88.

Construction of brush analyzing unit The form of construction of each brush unit |35 and the means whereby the various brush units |35 are carried by the brush carrying framework will now be described. Each unit |35 comprises a plate ||9 of insulating material which is provided with a diagonal cut or recess |20. In the process of manufacture, a series of horizontal cuts |2| are made in the plate ||9 and diagonal cuts |22 are also made, both of which terminate into the diagonal cut |20. Thus, a continuous recess is formed so as to receive a related brush holder |23 and an electrical contact pin |24 fitted Within said holder. The brush holders and pins are differently shaped and bent so as to be received by its appropriate recess to provide a `series of spaced brushes 11 spaced apart and corresponding to the index points of a. column of a tabulating card and to cause the conducting pins |24 to be spaced so that each row of conducting pins extends in a vertical plane. When the brush holders and associated pins are assembled within the plate I9 they are substantially flush with its surface so that they may be held in assembled position by means of'an attached cover .plate |25.

It willbe seen that the transverse plate 95 carries a longitudinal bar |26 of insulating material suitably cut longitudinally so as to receive Yrepresentative of each of the digits.

ten metallic bars 21. Adjacent bars are preferably insulated from each other by means of longitudinal strips |28 of insulating material.

A plurality of series of holes in each of the ten bars |21 is provided and each series is aligned vertically so as to receive the conducting pins |24 of a related brush unit. In order to further receive the conducting pins |24, the insulating bar |26 is provided with holes which are aligned with respect to the holes of series of bars |21. The bars |26, |21 and separating insulating strips |28 may be conveniently held by .the plate 95 by any suitable means.

When certain columns of the tabulating card are adapted to control calculating operations the associated brush units |35 are positioned so that the conducting pins |24 thereof are received and held by the brush carrying framework in the manner just described. It will also be recalled that for each card column a tabulating card is provided with ten index points, -9, inclusive. It will thus be obvious that by the provision of 4the ten bars |21, all of the brushes related to the same index points of a plurality of columns are electrically connected by the related bar |21. However, the metal tracks 88 are insulated from each other so that only the brush 11 which passes through the particular perforation of a column will be effective in an electrical circuit for control purposes.

The bars |21 may be considered as digit impulse transmitting bars because, as described in the aforementioned Patent No. 2,224,774, an impulse emitter is correlated with Ithe bars |21 to direct at diiferential times electrical impulses Therefore, all of the brushes 11 which analyze a perforation at the same index point position will receive through Athe common bar |21 the same digit impulse. It is pointed out that the positioning of the brush unit so that the pins |24 are received by the bars |21 will simultaneously dispose the analyzing brushes over the respective index point positions of .the card.

In order to further hold the brush units |35 in adjusted position to the brush carrying framework, each of the lbrush units |35 and the side arms |0| of the yoke-shaped frame is provided with a slot |29 adapted to receive a locking plate |30. The locking plate |30 is provided with a plurality of slots |3| for receiving the forward edges of the brush units |35 placed in operative position, thus spacing them apart. When the locking bar |30 is manually inserted so as to enter the slots |29 of the brush units |35 and the side arms |0I, a portion |32 projecting outside of the plate |0| will be received by an aperture of -a spring plate |33 attached to each of the plates |0|, the aperture corresponding to the sectional outline of the projecting portion |32. Itis evident that a similar locking means is provided for the left end of the plate |32 which is 'fully shown in the Patent No. 2,224,774.

Obviously, the columns of the card which are to be analyzed are analyzed by the brush units |35 placed at such column positions and for those columns which are not to be analyzed brush units |35 are not necessary, and since they are not assembled on the reciprocating frame the weight of the latter is reduced to avoid unnecessary expenditure of power.

While therehave been shown and described and pointed out the fundamental novel features of the invention as applied to a single modication, it will be understood that various omissions ation may be made by those skilled in the art` without departing from the spirit ofthe invention. It is the intention therefore to be limited only as indicated by the scope of the followingclaims.

What is claimed is:

1. An analyzing arrangement for a machine controlled by a perforated record provided with a plurality of columns of index points comprising, a plurality of insulated digit impulse transmitting bars, one for each index point position, and wherein at each card column each bar is provided with an aperture to thereby provide by all of said bars at each record column position a series of aligned apertures, a brush support plate oi' insulating material provided with analyzing brushes projecting exteriorly of one edge of the support plate for analyzing the series of index points of the record column correlated with the brushes, and means for attaching the support plate to the series of impulse transmitting bars at the column position desired comprising contact pins integrally connected to each of the brushes and projecting exteriorly from another edge of the support plate, whereby the insertion of such contact pins in the series of apertures of the bars at the column to be analyzed electrically connects the brushes to the respective impulse transmitting bars and simultaneously disposes each analyzing brush over the related index point position to be analyzed.

2. An analyzing arrangement for a machine controlled by a perforated card provided with a plurality of columns of index points comprising, a reciprocable frame, a plurality of insulated digit impulse transmitting bars carried by said frame, one for each index point position, and wherein at each card column each bar is provided with an aperture to thereby provide by all of said bars at each card column position a series of aligned apertures, a brush support plate of insulating material provided with analyzing brushes projecting exteriorly of one edge of the support plate for analyzing the series of index points of the card column correlated with the brushes, and means for attaching the support plate to the series of impulse transmitting bars to cause the support plate to be carried by the reciprocable frame at the card column position desired comprising contact pins integrally connected to each of the brushes and projecting exteriorly from another edge of the support plate, whereby the insertion of such contact pins in the series of apertures `of the bars at the card column to be analyzed electrically connects the brushes to the respective impulse transmitting bars and simultaneously disposes each analyzing brush over the related index point position to be analyzed.

3. An analyzing arrangement for a machine controlled by a perforated card provided with a plurality of columns of index points comprising a reciprocable frame, a plurality of insulated digit impulse transmitting bars carried by said frame, one for each index point position, and wherein at each card column each bar is provided with an aperture to thereby provide by all of said bars at each card column position a series of aligned apertures, a brush support plate of insulating material provided with analyzing brushes projecting exteriorly of one edge of the support plate for analyzing the series of index points of the card column correlated with the brushes, means for attaching the support plate to the series of imdisposes each analyzing brush over the related index point position to be analyzed, a. bar provided with a plurality of slots, there being a slot for each card column position in which tits, at still another edge, the brush support plate at the desired card column position, and means for attaching the slotted bar to the frame to lock the brush support plate in analyzingvposition.

GUSTAV TAUSCHEK. 

